90 Annals of the South African Museum. 



(Preuss. Exp. nach. Ost.-Asien., 1867, Zool. ii. p. 259. Type 

 obscurata, Ad. & Eve.), and Afrorhytida, Mollendorff (Conch. Cab., 

 1903, p. 61. Type knysnaensis, Pfr.). 



Very little is known of most of the animals, and subdivision of the 

 shells, on conchological grounds alone, is by no means satisfactory. 

 Future research will doubtless provide anatomical grounds for 

 reclassification, and establish the suggested subgenera on a per- 

 manent basis. Meanwhile, to facilitate reference, it is more con- 

 venient to place the species in alphabetical sequence under Natalina. 



112. NATALINA AEGUTA, Melv. & Pons. 



1907 Natalina arguta, M. & P., A.M.N.H. xix. p. 98. pi. 6, f. 8. D.F. 

 Type in British Museum. 

 Hob. CAPE OF GOOD HOPE. East London (Burnup). 



113. NATALINA BEYRICHI (von Martens). 



1890 Aerope beyrichi, von Mts., Sitz.-Ber. Ges. Nat. Fr. Berlin, 



p. 85. D. 



1894 ,, Conch. Mitth. iii, 3. p. 1. D. 



1897 ,, ,, Archiv. f. Naturg. Ixiii, i. p. 35. 



pi. 6, f. 1-3. D.F. 

 1903 Natalina beyrichi Mlldff., Conch. Cab. p. 21. pi. 4, 



f. 1-3. D.F. 



Type in Zool. Mus. Berlin. 

 Hab. CAPE OF GOOD HOPE. Pondoland (Beyrich). 



114. NATALINA CAFFRA (Ferussac). [S.A.M.] 



1821 Helix cafra, Fer., Tabl., Syst. Moll. pt. 3. p. 29 (or 25.) N. 

 1838 ' ,, Desh., Hist. Nat. An. s. Vert. viii. p. 107. D. 



1848 Helix caffra Krs., Siidafr. Moll. p. 75. N. 



Pfr., Mon. Hel. i. p. 40. D. 



1850 Helix cafra Desh., Hist. Nat. Moll. i. p. 198. pi. QA, 



f. 8. D.F. 



1851 Helix caffra Eve., Conch. Icon. pi. 40, f. 179. D.F. 

 1851, 52 Pfr., Conch. Cab. p. 52. pi. 74, f. 1-3. D.F. 

 1880 Ehytida caffra, Fer., Gibb., Journ. of Conch, iii. p. 95. D. 

 1885 Aerope Tryon, Man. of Conch, i. p. 131, pi. 25, 



f. 13. D.F. 



1890 ,, Pilsb., Proc. Acad. Nat. Sci. Phila. p. 41. 



pi. 1, f. A-F. AM. 



